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chaingen: Export vote commitment script function.

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This exports the VoteCommitmentScript function so callers can make use
of it to create new vote commitment scripts.
This commit is contained in:
Dave Collins 2018-02-24 20:43:00 -06:00
parent 8c69c29d69
commit 6512184190
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GPG Key ID: B8904D9D9C93D1F2
1 changed files with 4 additions and 4 deletions
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8
blockchain/chaingen/generator.go
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@ -533,10 +533,10 @@ func isRevocationTx(tx *wire.MsgTx) bool {
return scriptClass == txscript.StakeRevocationTy
}
// voteBlockScript returns a standard provably-pruneable OP_RETURN script
// VoteCommitmentScript returns a standard provably-pruneable OP_RETURN script
// suitable for use in a vote tx (ssgen) given the block hash and height to vote
// on.
func voteCommitmentScript(hash chainhash.Hash, height uint32) []byte {
func VoteCommitmentScript(hash chainhash.Hash, height uint32) []byte {
// The vote commitment consists of a 32-byte hash of the block it is
// voting on along with its expected height as a 4-byte little-endian
// uint32. 32-byte hash + 4-byte uint32 = 36 bytes.
@ -554,7 +554,7 @@ func voteCommitmentScript(hash chainhash.Hash, height uint32) []byte {
// voteBlockScript returns a standard provably-pruneable OP_RETURN script
// suitable for use in a vote tx (ssgen) given the block to vote on.
func voteBlockScript(parentBlock *wire.MsgBlock) []byte {
return voteCommitmentScript(parentBlock.BlockHash(),
return VoteCommitmentScript(parentBlock.BlockHash(),
parentBlock.Header.Height)
}
@ -1825,7 +1825,7 @@ func updateVoteCommitments(block *wire.MsgBlock) {
continue
}
stx.TxOut[0].PkScript = voteCommitmentScript(block.Header.PrevBlock,
stx.TxOut[0].PkScript = VoteCommitmentScript(block.Header.PrevBlock,
block.Header.Height-1)
}
}